TY - JOUR AU - I. V. Pehenko TI - Estimates of the solutions of ordinary differential equations with a small parameter multiplying the highest derivative JO - Differencialʹnye uravneniâ PY - 1975 SP - 456 EP - 461 VL - 11 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_1975_11_3_a4/ LA - ru ID - DE_1975_11_3_a4 ER -